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Worksheet+4+-+Answer+Key - Bio 93 Worksheet 4 Lectures 8...

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Bio 93 Pooja Patel Worksheet 4 – Lectures 8 and 9 [email protected] Lecture 8: Carbon, Carbohydrates, and Lipids CARBON Carbon atoms have 4 valence electrons and can form 4 covalent bonds o Large variention in arrangement of carbon skeletons Functional groups: o Hydroxyl (-OH - ) o Carbonyl (-C=O) o Carboxyl (-COOH) o Amino (-NH 2 ) o Sulfhydryl (-SH) o Phosphage (-OPO 3 ) Carbon Based Macromolecules o Carbohydrates, proteins, nucleic acids Polymers: long molecules built from small similar subunits (monomers) linked by covalent bonds o Lipids Hydrophobic macromolecules Built from two or more different types of smaller subunits o Formation of polymers: o Disassembly of polymers
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Bio 93 Pooja Patel Worksheet 4 – Lectures 8 and 9 [email protected] Carbohydrates o Monomers: monosaccharidse 3, 5, 6 carbon sugars Often in ring form in solution o Disaccharide 2 monosaccharides joined by glycosidic bond (covalent) o Polysaccharides Polymers of 100s-1000s of monosaccharides Provide structure (e.g. cellulose in plants) and store energy (e.g. glycogen in
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